Math Problem Statement

Tìm tất cả các hàm số f : R → R thoả mãn f (x−y)2 =(f(x))2 −2xf(y)+y2,∀x,y ∈ R.

Solution

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Math Problem Analysis

Mathematical Concepts

Functional Equations

Formulas

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Theorems

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Suitable Grade Level

Advanced Mathematics

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